Improvement in grain-drills



- non eine am effin* JESSE W. ORAVEN AND ALBERT CLARK, 0F CENTRE VALLEY, INDIANA.

f/ Letters Patent No. 113,022, dated March 28, 1871.

IMPROVEMENT IN GRAIN-DRILLS.

The Schedule referred to in these Letters Patent and making part of the same.

certain improvements thereon, which will be hereinafter described and subsequently claimed.

Figure l is a plan view of my improved machine;

Figure 2 is a longitudinal section taken on the line a: x of iig. 1';

Figure 3 is a transverse section; and

Figure 4 is a detail vin section, showing the arrangement of the drills.

Similar letters of reference indicate corresponding parts.

On a frame, consisting of the center-beam A and the beams B, jointed to A at the front, onev on eachl side, and diverging therefrom in the manner of ordinary cnltivators, which frame is mounted on a casterwheel, C, and a slide-operating wheel, D, we, mount the grain-hopper E, feed-slide F, spouts H I K, and the drills L, all as shown.

The feed-slide is connected by the rods M, lever N, and the rods O with the disks Pon theaxle of the wheel D, which disks have several holes, `at diiierent v distances from the center, for the connection of the wrist-pin, which is 'properly constructed therefor, to vary'the amount of movement of the slide, and thereby vary the dropping of the grain as maybe required.

For insuring the feeding with regularity, we provide three rows orv series of holes, a b d, vin the bot-torn of the hopper, and the same in the feed-slide, the holes a and al being in the same longitudinal lines, and the holes!) being in the lines between a and cl, which gives two deliveries to each movement of the slide, and the feeding is very regular. i

The sponts below the hopper-bottom are arranged relatively to the holes, so as to receive and convey to each drill a like quantity.

For spreading and contracting the frame the movable-beams have each a toothed rack-bar, Q, pivoted to the reaiend, and extehdingacross ther beam A, under suitable guides, and gearing with a pinion, R, on a shaft, S, which has a springcrank,l,'for turning and holding it at any point. It springs down into notches inthe circular plate U, for holding it.

'Ihe drills L are pivoted at f to the tubes g, and have notches in the front to admit of turning the points up from the ground, as indicated at' x, and they are heldin such position by the pins h passing through the ears i behind the tubes g.

The same pins, being passed through the ears at the front of the tubes, hold the drills in the working position..

The tubes leading to the drills at the center, between the ends ofthe beams B, are made in funnel shape at the. top, as shown at K, to receive the grain in any position of the beams; and the rear tubes have sponts,4v

l, which are pivoted at the upper' ends, to oscillate with the beams.

Having thus described our invention,

IVe claim as' new and desire to secure by Letters Patentl. The arrangement of the series of holes a b d in thehopper bottom, and the corresponding holes/in the slide.

2. The arrangement, with the dropping-slide and the driving-wheel, of the disks I), the rods IVI O, and the lever N, the 'said disksdhaving two or more holes adapted to receive the wrist-pin at different distances from the axis, to vary the feed, all substantially as specified.

,3. Il he arrangement of the drills L with the tubes g and the pins i, for holding the said drills above the ground, all substantially as specified.

JESSE NV. GRAVEN. ALBERT CLARK. Witnesses:

LEX. CLARK, WM. ALLEN. 

